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Pixel driving circuit, pixel driving method and pixel driving system

A technology of pixel driving circuit and driving method, which is applied in the direction of instruments, static indicators, etc., can solve problems such as video display distortion, achieve the effect of reducing pixel display distortion and overcoming the impact

Active Publication Date: 2019-04-12
CHENGDU JINGSHA TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the driving voltage stored in the energy storage capacitor in a certain row of pixel units in the next frame is lower than the driving voltage stored in the energy storage capacitor in the same row of pixel units in the previous frame, there will be current backflow in the energy storage capacitor, which requires VDAC It has the function of current backflow. At the same time, if the difference between the driving voltage of the same row in the next frame and the previous frame is too large, the current backflow may not be timely, and the driving voltage stored in the energy storage capacitor is not reduced to the corresponding voltage value of the video data. Distorted video display

Method used

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  • Pixel driving circuit, pixel driving method and pixel driving system
  • Pixel driving circuit, pixel driving method and pixel driving system
  • Pixel driving circuit, pixel driving method and pixel driving system

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Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. In the case of no conflict, the embodiments and the features in the embodiments of the present invention can be combined arbitrarily with each other.

[0037] Exemplary embodiments are described in detail herein, and when the following description refers to the accompanying drawings, the same numerals in different drawings indicate the same ...

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Abstract

The invention discloses a pixel driving circuit, a pixel driving method and a pixel driving system. The driving circuit comprises a source switch unit (1), a pixel unit (2) and a discharging unit (3);the discharging unit (3) is connected between the source switch unit (1) and the pixel unit (2), or the discharging unit (3) is connected between the source switch unit (1) and a ramp voltage VDAC.The influence on the current to-be-displayed data by the previous frame display data is overcome, and the pixel display distortion is reduced.

Description

technical field [0001] The invention relates to a pixel driving circuit, a pixel driving method and a pixel driving system. Background technique [0002] Display technology has experienced a series of technological developments from CRT to LCD, LED, OLED, QLED and Micro-OLED, and the effect of video display is getting better and better. And other performance requirements are getting higher and higher. figure 1 It is an existing pixel driving circuit, including a source switch unit 1 and a pixel unit 2, wherein the source switch unit is composed of a pair of PMOS transistors P1 and NMOS transistors N1, and the pixel unit includes a gate switch unit (composed of a pair of PMOS transistors P2 and NMOS tube N2), energy storage capacitor CS, drive tube N4, bias tube N5, OLED light-emitting unit, etc. figure 2 It is a timing diagram of an existing pixel driving circuit. When performing video display, the gate switch units of each pixel unit in a certain row are turned on at the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208G09G3/3233G09G3/3258G09G3/32
CPCG09G3/32G09G3/3208G09G3/3233G09G3/3258
Inventor 黎守新文奥
Owner CHENGDU JINGSHA TECH
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